. >> reporter: it was chain's way of saying thank you to the obama campaign. chain suffered a brain tumor in 2010 while she was out of the country and uninsured. >> i started applying to every insurance plan that i could because they had to perform brain surgery to keep me alive. every plan you can think of. all of them, denied me. >> reporter: in this video which she made for the obama campaign, she says the only reason she was able to get insurance for her pre-existing condition was because of obamacare. >> i recovered 100% from a life- threatening brain tumor when i was previously denied insurance from every providers. >> reporter: as part of the day of service tradition president obama started four years ago to honor dr. martin luther king jr.. >> it really touches me and i just wanted an opportunity to say thank you to everyone that welcomed so hard on the -- worked so hard on the campaign. >> reporter: and a host of other events still to come throughout the weekend and into monday. the next one coming up for us will be heading to the golden state bash. a